What are the Basic Parameters of Espresso Coffee and What are the Steps to Make a Shot of Espresso?

Basic Espresso Parameters from FrontStreet Coffee

• Extraction time is 25 seconds — stick to it unless you are deliberately experimenting.

• Dose depends on your basket size (single or double); each single shot of Espresso takes 8-10 grams of ground coffee.

• A shot of Espresso usually comes out at 25-35 milliliters, and fine-tuning the other parameters lets you adjust that easily.

14 Steps for Making Perfect Espresso

1. Cups

Warm your cups first — rinse them with hot water. A hot cup holds the coffee's flavor far better.

2. Portafilter & Basket

Check that the portafilter is clean and dry. Residual grounds will taint the taste of your Espresso, and a damp basket will throw off extraction too, since it dampens the coffee grounds.

3. Coffee Bean Grind and Dose

Fill the basket with ground coffee, controlling grind size and dose so you avoid both under-extraction (which reads as sourness) and over-extraction (which pushes bitterness). With a precisely calibrated grinder this is easy; otherwise, weigh it on an electronic scale.

4. Distribution

Tap the edge of the basket lightly to settle the grounds evenly — or use a distribution tool if you have one. This step matters more than people think: it eliminates large gaps in the puck. Where gaps exist, water channels toward them instead of flowing evenly through the coffee, and those pockets of grounds end up over-extracted.

5. Tamping

Tamping serves the same goal: closing the gaps and leveling the grounds.

Press down firmly with the tamper, keeping your arm vertical and applying force evenly straight down. The usual guideline is 30 pounds of pressure, but the exact number matters less than direction — vertical force keeps the coffee surface flat and extraction uniform.

6. Polishing the Puck

Rest the tamper on the grounds and give it a spin. This smooths out small ridges, leaving the surface flat and even.

7. Clean the Basket

Imagine ordering a cappuccino and finding stray grounds floating in it. To prevent that, brush any loose grounds off the rim and sides of the basket.

8. Clean the Group Head

Before locking in the portafilter, flush and wipe the group head to clear away residual grounds. Don't skip this — anything left behind will end up in the cup and throw off the taste.

9. Extract Espresso

Lock the prepared portafilter into the machine and start the extraction right away. Timing matters: step away for a two-minute phone call and all your careful preparation goes to waste.

10. Serve the Coffee

Whether your machine stops automatically or you hit stop at 25 seconds, once extraction is done, lift the cup off the drip tray. Your Espresso is ready — serve it straight to the guest, or start steaming milk for a latte or cappuccino.

11. Discard the Puck

Remove the portafilter and knock the spent puck into a knock box. Never skip this — leaving old grounds sitting in the machine does neither the machine nor the next shot any good.

12. Cleaning

Rinse the portafilter clean so it's ready for the next Espresso.

13. Clean the Group Head

Run the water outlet and scrub the group head with a small brush. Clear out every trace of residual grounds, or they will sabotage your next cup.

14. Reattach the Portafilter

Lock the portafilter back into the machine. This keeps it clean and hot — and it will be right there waiting when the next Espresso comes in.

FrontStreet Coffee Recommendation

Great espresso starts with beans built for pressure. The FrontStreet Classic Blend is the first pick: designed expressly for espresso machines and moka pots, it follows the traditional Mamba formula with a touch of robusta, delivering buttery, nutty, spiced, dark-chocolate, and toast aromas, a thick wild body, and a dense golden crema that makes latte art almost effortless. If you want nut-forward comfort, the FrontStreet Signature Blend — the house blend of choice for nearly ten years, pairing Brazilian Cerrado with Colombian Huila — brings almond, walnut, chocolate, and caramel notes with gentle acidity, while the 100% Arabica FrontStreet Dark Cocoa Blend folds in Yunnan's ripe-plum acidity behind a cream-chocolate aroma, balancing quality and value beautifully.

For single-origin espresso, FrontStreet Natural Huakui SOE — grown at up to 2,300 meters in Guji Hambella, Ethiopia, and medium roasted — cups like cream, cocoa, berries, faint florals, and black tea, wonderful as an Americano or latte. And for a low-acid, soft-textured shot at a friendly price, FrontStreet Brazil Queen Estate SOE, a Yellow Bourbon at a medium-dark roast, pulls shots of butter cookie, macadamia, and toast.